John Mueller: hreflang is the most complex part of SEO

On Twitter, Google’s John Mueller said that hreflang is one of the most complex aspects of SEO.

The hreflang tag is for websites with content in multiple languages. For example, a page might be available in English and German. The hreflang tag can help you to make sure that Google shows the German version of the page to German visitors.

TBH hreflang is one of the most complex aspects of SEO (if not the most complex one). Feels as easy as a meta-tag, but it gets really hard quickly.